98 lines
3.2 KiB
Go
98 lines
3.2 KiB
Go
// SPDX-FileCopyrightText: Copyright The Miniflux Authors. All rights reserved.
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// SPDX-License-Identifier: Apache-2.0
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package rss // import "miniflux.app/v2/internal/reader/rss"
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import (
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"errors"
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"math"
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"strconv"
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"strings"
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)
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var ErrInvalidDurationFormat = errors.New("rss: invalid duration format")
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// PodcastFeedElement represents iTunes and GooglePlay feed XML elements.
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// Specs:
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// - https://github.com/simplepie/simplepie-ng/wiki/Spec:-iTunes-Podcast-RSS
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// - https://developers.google.com/search/reference/podcast/rss-feed
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type PodcastFeedElement struct {
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ItunesAuthor string `xml:"http://www.itunes.com/dtds/podcast-1.0.dtd channel>author"`
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Subtitle string `xml:"http://www.itunes.com/dtds/podcast-1.0.dtd channel>subtitle"`
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Summary string `xml:"http://www.itunes.com/dtds/podcast-1.0.dtd channel>summary"`
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PodcastOwner PodcastOwner `xml:"http://www.itunes.com/dtds/podcast-1.0.dtd channel>owner"`
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GooglePlayAuthor string `xml:"http://www.google.com/schemas/play-podcasts/1.0 channel>author"`
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}
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// PodcastEntryElement represents iTunes and GooglePlay entry XML elements.
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type PodcastEntryElement struct {
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Subtitle string `xml:"http://www.itunes.com/dtds/podcast-1.0.dtd subtitle"`
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Summary string `xml:"http://www.itunes.com/dtds/podcast-1.0.dtd summary"`
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Duration string `xml:"http://www.itunes.com/dtds/podcast-1.0.dtd duration"`
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GooglePlayDescription string `xml:"http://www.google.com/schemas/play-podcasts/1.0 description"`
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}
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// PodcastOwner represents contact information for the podcast owner.
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type PodcastOwner struct {
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Name string `xml:"http://www.itunes.com/dtds/podcast-1.0.dtd name"`
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Email string `xml:"http://www.itunes.com/dtds/podcast-1.0.dtd email"`
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}
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// Image represents podcast artwork.
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type Image struct {
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URL string `xml:"href,attr"`
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}
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// PodcastAuthor returns the author of the podcast.
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func (e *PodcastFeedElement) PodcastAuthor() string {
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author := ""
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switch {
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case e.ItunesAuthor != "":
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author = e.ItunesAuthor
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case e.GooglePlayAuthor != "":
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author = e.GooglePlayAuthor
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case e.PodcastOwner.Name != "":
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author = e.PodcastOwner.Name
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case e.PodcastOwner.Email != "":
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author = e.PodcastOwner.Email
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}
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return strings.TrimSpace(author)
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}
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// PodcastDescription returns the description of the podcast.
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func (e *PodcastEntryElement) PodcastDescription() string {
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description := ""
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switch {
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case e.GooglePlayDescription != "":
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description = e.GooglePlayDescription
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case e.Summary != "":
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description = e.Summary
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case e.Subtitle != "":
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description = e.Subtitle
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}
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return strings.TrimSpace(description)
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}
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// normalizeDuration returns the duration tag value as a number of minutes
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func normalizeDuration(rawDuration string) (int, error) {
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var sumSeconds int
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durationParts := strings.Split(rawDuration, ":")
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if len(durationParts) > 3 {
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return 0, ErrInvalidDurationFormat
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}
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for i, durationPart := range durationParts {
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durationPartValue, err := strconv.Atoi(durationPart)
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if err != nil {
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return 0, ErrInvalidDurationFormat
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}
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sumSeconds += int(math.Pow(60, float64(len(durationParts)-i-1))) * durationPartValue
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}
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return sumSeconds / 60, nil
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}
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